11405143 has 2 divisors, whose sum is σ = 11405144. Its totient is φ = 11405142.

The previous prime is 11405137. The next prime is 11405153. The reversal of 11405143 is 34150411.

11405143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (34150411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11405143 - 2¹³ = 11396951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11405143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11405153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702571 + 5702572.

It is an arithmetic number, because the mean of its divisors is an integer number (5702572).

Almost surely, 2^11405143 is an apocalyptic number.

11405143 is a deficient number, since it is larger than the sum of its proper divisors (1).

11405143 is an equidigital number, since it uses as much as digits as its factorization.

11405143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 11405143 is about 3377.1501299172. The cubic root of 11405143 is about 225.0955511859.

Adding to 11405143 its reverse (34150411), we get a palindrome (45555554).

The spelling of 11405143 in words is "eleven million, four hundred five thousand, one hundred forty-three".